In this video I demonstrate the mosfet module I got from http://www.ICStation.com The module has two AOD4184 N-channel mosfets in parallel, which will switch the negative wire on and off. The trigger input has small (in range of 150Ohm) resistor in series and gate has around 10kOhm pull-down resistor. Series resistor limits the current when trigger signal goes high and pull-down resistor keeps the mosfet switched off if trigger signal isn't connected. Datasheet of the mosfets: http://www.aosmd.com/pdfs/datasheet/AOD4184A.pdf "Trigger Switch Driver Module Dual MOS Tube Support PWM Controller DC 5V-36V": http://www.icstation.com/trigger-switch-driver-module-dual-tube-support-controller-p-10536.html COUPON: Code: hhics Discount Amount: 18% off Max Use: 1 (one for per user) Amount Limit: 100 This module was kindly provided to me by http://www.icstation.com at no cost. If you liked the video, please show it and hit the Like-button! Check out my other videos: https://www.youtube.com/user/hugatry/videos Subscribe: https://www.youtube.com/user/hugatry?sub_confirmation=1